A general term that stems from a shortening of douschebag or douchebag; can be used in many ways:

A)Can sometimes be used as a playful insult among friends, especially if one of them has done something stupid or absentminded;

B)Can be used as a semi-serious insult, as when person A has actually been offended by a comment or action done by person B, but person A does not wish to get into fight; he merely wants to express his annoyance;